A nurse is monitoring a child for manifestations of hemorrhage following a tonsillectomy. Which of the following findings is a manifestation of this postoperative complication?

A. Mouth breathing is common after a tonsillectomy due to throat pain and swelling but is not a specific sign of hemorrhage. B. Reports of thirst can occur after surgery due to limited oral intake and mouth breathing but are not indicative of hemorrhage. C. Frequent swallowing is a key sign of hemorrhage following a tonsillectomy, as the child may be swallowing blood that is dripping into the throat. D. Reports of pain are expected after tonsillectomy but do not specifically indicate hemorrhage.